Paging Message Filtering for NR-NTN Tracking Area Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the context of New Radio Non-Terrestrial Network (NR-NTN) scenarios, the 'soft switch' of tracking areas leads to false wake-ups of terminal devices in idle mode due to the paging load of multiple tracking areas, causing inefficiencies in resource management and device activation.
Innovation Solution
A solution where a first device in a tracking area receives identification information from a second device to monitor paging messages, allowing it to determine whether the message is directed to its tracking area, thereby avoiding unnecessary wake-ups by selectively monitoring only relevant paging messages based on received identification information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cell broadcasts multiple tracking area codes (TACs) during soft switch, then tracking area management flexibility is improved, but false wake-up rate of terminal devices increases
Solution Approach 1:
The patent segments the paging message delivery by introducing tracking area code indication information. The paging message is divided into two parts: common information (broadcast by cell) and terminal-specific information (filtered using TAC indication). This segmentation allows the system to maintain multiple TAC broadcasting for flexibility while enabling terminals to filter out irrelevant paging messages through TAC matching, thus reducing false wake-ups.
2Reliability
If terminal devices monitor all tracking area paging messages during soft switch, then paging message delivery reliability is improved, but device energy consumption increases
Solution Approach 1:
The patent extracts the tracking area code indication information from the paging message as a filtering criterion. Terminals use this extracted TAC indication to determine whether to process the paging message. By taking out the TAC indication as a preliminary filter, terminals can quickly identify relevant paging messages without monitoring all possible TAC messages, thereby reducing energy consumption while maintaining delivery reliability for relevant messages.
3Stability of the object's composition
If cells broadcast multiple TACs during soft switch, then network coverage continuity is improved, but paging load increases
Solution Approach 1:
The patent applies local quality by making the paging message processing behavior terminal-specific based on its registered TAC. While the cell broadcasts multiple TACs uniformly (maintaining network coverage continuity), each terminal applies its own TAC filtering logic locally. This allows the system to maintain comprehensive coverage while reducing the effective paging load on individual terminals by having them process only relevant messages matching their registered TAC.
Data Source
AI summary
Embodiments of the present disclosure relate to paging. A first device in a tracking area receives, from a second device, identification information for monitoring a paging message associated with the tracking area. The first device is registered in the tracking area. The first device monitors, from the second device, the paging message based on the received identification information.